Abstract
The results of experiments on the icosahedral to crystalline transformation of melt-spun Al51Cu12.5Li16.5Mg20 are reported. The microstructural characteristics of the alloy, in all stages of the transformation, have been determined using a combination of transmission electron microscopy, X-ray diffraction and differential scanning calorimetry. The as-spun alloy consists of icosahedral grains with a low volume fraction of quenched-in crystallites. The quasilattice constant is calculated to be 0.505 nm. Upon annealing at 394 °C for 20 min, the icosahedral phase completely transforms to Al5Cu(Li, Mg)3 (a b c c phase), aluminium and a hexagonal phase. The orientation relationships and chemical compositions of all phases involved are established. Electron microscopy reveals planar defects in all the crystalline phases (except aluminium). The planar defects in the b c c phase are on {1 1 0} and {1 0 0}-type planes. Defects in the hexagonal phase are found to be on {0001} and {11 ¯20}-type planes.
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D. SHECHTMAN, I. BLECH, D. GRATIAS and J. W. CAHN, Phys. Rev. Lett. 53 (1984) 1951.
C. SURYANARAYANA, S. CHANDRA and J. MENON, J. Mater. Res. 3 (1988) 34.
Y. SHEN, Thesis, University of Virginia (1988).
S. CHANDRA and C. SURYANARAYANA, Phil. Mag. B 58 (1988) 185.
A. L. MACKAY, J. Phys. Paris 47 (1986) C3–153.
H. K. HARDY and J. M. SILCOCK, J. Inst. Metals 24 (1955–56) 423.
E. E. CHERKASHIN, P. I. KRIPYAKEVICH, G. I. OLEKSIV, Sov. Phys. Crystallogr. 8 (1964) 681.
R. D. FIELD and H. FRASER, Mater. Sci. Engng 68 (1984–85) L17.
P. SAINFORT and B. DUBOST, J. Phys. Paris 47 (1986) C3–321.
W. A. CASSADA, G. J. SHIFLET and E. A. STARKE J, Scripta Metall. 20 (1986) 751.
P. SAINFORT, B. DUBOST and DABUS, Compt. Rend. Acad. Sci. Paris 301 (1985) 689.
B. DUBOST, J. M. LANG, M. TANAKA, P. SAINFORT and M. AUDIER, Nature 324 (1986) 48.
M. AUDIER and P. GUYOT, J. Phys. Paris 47 (1986) 405.
F. W. GAYLE, J. Mater. Res. 2 (1987) 1.
W. A. CASSADA, G. J. SHIFLET and S. J. POON, Phys. Rev. Lett. 56 (1986) 2276.
G. BERGMAN, J. L. T. WAUGH and L. PAULING, Acta Crystallogr. 10 (1957) 254.
M. AUDIER, J. PANNETIER, M. LEBLANC, C. JANOT, M. LANG and B. DUBOST, Phys. B 153 (1988) 136.
C. A. GURYAN, P. W. STEPHENS, A. I. GOLDMAN and F.W. GAYLE, Phys. Rev. B 37 (1988) 8495.
Y. SHEN, W. DMOWSKI, T. EGAMI, S. J. POON and G. J. SHIFLET, ibid. 37 (1988) 1146.
M. AUDIER, P. SAINFORT and B. DUBOST, Phil. Mag. B 54 (1986), L105.
Y. MA, E. A. STERN and F. W. GAYLE, Phys. Rev. Lett. 58 (1987) 1956.
W. DMOWSKI, T. EGAMI, Y. SHEN, S. J. POON and G. J. SHIFLET, Phil. Mag. Lett. 56 (1987) 63.
G. LAPASSET and A. LOISEAU, J. Phys. Paris 47 (1986) C3–489.
A. LOISEAU and G. LAPASSET, Phil. Mag. Lett. 56 (1987) C3–165.
Idem, Phil Mag. B 56 (1987) L165
F. C. FRANK and J. S. KASPER, Acta. Crystallogr. 12 (1959) 483.
Idem, ibid. 11 (1958) 184.
A. LOISEAU and G. LAPASSET, J. Phys. Paris 47 (1986) C3–331
B. DUBOST, M. AUDIER, P. JEANMART, J. M. LANG and P. SAINFORT, ibid. 48 (1987) C3–497
M. AUDIER, Ch. JANOT, M. de BOISSIEU and B. DUBOST, Phil. Mag. B 60 (1989) 437.
K. F. KELTON and T. W. WU, Appl. Phys. Lett. 46 (1985) 1059.
A. I. DREHMAN, S. J. POON and K. R. LAWLESS, in “Rapidly Solidified Alloys and their Mechanical and Magnetic Properties”, edited by B.C. GIESSEN, D. E. POLK, A. I. TAUB Vol. 58 (Materials Research Society, Pittsburgh, PA, 1986) p. 249.
D. S. ZHOU, in Proceedings of the XII International Congress on Electron Microscopy”, Seattle, Vol. 4 (1990) p. 456.
M. TANAKA, M. TERAUCHI and T. KANEYAMA, “Convergent Beam Electron Diffraction II” (Jeol Ltd, Tokyo, Japan).
V. ELSER, Phys. Rev. B 32 (1985) 4892.
T. C. LUBENSKY, J. E. S. SOCOLAR, P. J. STEINHARDT, P. A. BANCEL and P. A. HEINEY, Phys. Rev. Lett. 57 (1986) 1440.
V. ELSER, Acta Crystallogr. A 42 (1986) 36.
J. E. S. SOCOLAR and D. C. WRIGHT, Phys. Rev. Lett. 59 (1987) 221.
T. C. LUBENSKY, S. RAMASWAMY and J. TONER, Phys. Rev. B 33 (1986) 7715.
Idem, ibid. 32 (1985) 7444.
P. A. BANCEL, P. A. HEINEY, P. W. STEPHENS, A. I. GOLDMAN and P. M. HORN, Phys. Rev. Lett. 54 (1985) 2422.
C. SURAYANARAYANA and H. JONES, Int. J. Rapid Solid. 3 (1987) 253.
G. J. SHIFLET, Q. B. YANG, D. S. ZHOU and S. J. POON, Phil. Mag. A, 64 (1991) 483.
Q. B. YANG, D. S. ZHOU and G. J. SHIFLET, Phil. Mag. A, 65 (1992) 1395.
V. ELSER and C. L. HENLEY, Phys. Rev. Lett. 55 (1985) 2883.
M. DUNEAU and A. KATZ, ibid. 54 (1985) 2688.
J. M. LEGRESEY, M. AUDIER, J. P. SIMON and P. GUYOT, Acta Metall 34 (1986) 1759.
W. A. CASSADA, Thesis, University of Virginia (1987).
D. C. KOSKENMAKI, H. S. CHEN and K. V. RAO, Phys. Rev. B 33 (1986) 5328.
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Diehl, P.E., Zhou, D.S. & Shiflet, G.J. The icosahedral to crystalline transformation in Al51Cu12.5Li16.5Mg20 melt-spun ribbons. JOURNAL OF MATERIALS SCIENCE 28, 3731–3740 (1993). https://doi.org/10.1007/BF00353171
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DOI: https://doi.org/10.1007/BF00353171